#ifndef _LINUX_TIME_H
#define _LINUX_TIME_H

#include <types.h>

//#ifdef __KERNEL__
//# include <linux/cache.h>
//# include <linux/seqlock.h>
//# include <linux/math64.h>
//#endif


#ifndef _STRUCT_TIMESPEC
#define _STRUCT_TIMESPEC
struct timespec {
	long	tv_sec;			/* seconds */
	long	tv_nsec;		/* nanoseconds */
};
#endif

struct timeval {
	long	tv_sec;		/* seconds */
	long	tv_usec;	/* microseconds */
};

//struct timezone {
//	int	tz_minuteswest;	/* minutes west of Greenwich */
//	int	tz_dsttime;	/* type of dst correction */
//};
//
//
//extern struct timezone sys_tz;
//
///* Parameters used to convert the timespec values: */
//#define MSEC_PER_SEC	1000L
//#define USEC_PER_MSEC	1000L
//#define NSEC_PER_USEC	1000L
//#define NSEC_PER_MSEC	1000000L
//#define USEC_PER_SEC	1000000L
//#define NSEC_PER_SEC	1000000000L
//#define FSEC_PER_SEC	1000000000000000LL
//
//#define TIME_T_MAX	(time_t)((1UL << ((sizeof(time_t) << 3) - 1)) - 1)
//
//static inline int timespec_equal(const struct timespec *a,
//                                 const struct timespec *b)
//{
//	return (a->tv_sec == b->tv_sec) && (a->tv_nsec == b->tv_nsec);
//}
//
///*
// * lhs < rhs:  return <0
// * lhs == rhs: return 0
// * lhs > rhs:  return >0
// */
//static inline int timespec_compare(const struct timespec *lhs, const struct timespec *rhs)
//{
//	if (lhs->tv_sec < rhs->tv_sec)
//		return -1;
//	if (lhs->tv_sec > rhs->tv_sec)
//		return 1;
//	return lhs->tv_nsec - rhs->tv_nsec;
//}
//
//static inline int timeval_compare(const struct timeval *lhs, const struct timeval *rhs)
//{
//	if (lhs->tv_sec < rhs->tv_sec)
//		return -1;
//	if (lhs->tv_sec > rhs->tv_sec)
//		return 1;
//	return lhs->tv_usec - rhs->tv_usec;
//}
//
//extern unsigned long mktime(const unsigned int year, const unsigned int mon,
//			    const unsigned int day, const unsigned int hour,
//			    const unsigned int min, const unsigned int sec);
//
//extern void set_normalized_timespec(struct timespec *ts, time_t sec, s64 nsec);
//
///*
// * timespec_add_safe assumes both values are positive and checks
// * for overflow. It will return TIME_T_MAX if the reutrn would be
// * smaller then either of the arguments.
// */
//extern struct timespec timespec_add_safe(const struct timespec lhs,
//					 const struct timespec rhs);
//
//
//static inline struct timespec timespec_add(struct timespec lhs,
//						struct timespec rhs)
//{
//	struct timespec ts_delta;
//	set_normalized_timespec(&ts_delta, lhs.tv_sec + rhs.tv_sec,
//				lhs.tv_nsec + rhs.tv_nsec);
//	return ts_delta;
//}
//
///*
// * sub = lhs - rhs, in normalized form
// */
//static inline struct timespec timespec_sub(struct timespec lhs,
//						struct timespec rhs)
//{
//	struct timespec ts_delta;
//	set_normalized_timespec(&ts_delta, lhs.tv_sec - rhs.tv_sec,
//				lhs.tv_nsec - rhs.tv_nsec);
//	return ts_delta;
//}
//
///*
// * Returns true if the timespec is norm, false if denorm:
// */
//#define timespec_valid(ts) \
//	(((ts)->tv_sec >= 0) && (((unsigned long) (ts)->tv_nsec) < NSEC_PER_SEC))
//
//extern seqlock_t xtime_lock;
//
//extern void read_persistent_clock(struct timespec *ts);
//extern void read_boot_clock(struct timespec *ts);
//extern int update_persistent_clock(struct timespec now);
//extern int no_sync_cmos_clock __read_mostly;
//void timekeeping_init(void);
//extern int timekeeping_suspended;
//
//unsigned long get_seconds(void);
//struct timespec current_kernel_time(void);
//struct timespec __current_kernel_time(void); /* does not take xtime_lock */
//struct timespec __get_wall_to_monotonic(void); /* does not take xtime_lock */
//struct timespec get_monotonic_coarse(void);
//
//#define CURRENT_TIME		(current_kernel_time())
//#define CURRENT_TIME_SEC	((struct timespec) { get_seconds(), 0 })
//
///* Some architectures do not supply their own clocksource.
// * This is mainly the case in architectures that get their
// * inter-tick times by reading the counter on their interval
// * timer. Since these timers wrap every tick, they're not really
// * useful as clocksources. Wrapping them to act like one is possible
// * but not very efficient. So we provide a callout these arches
// * can implement for use with the jiffies clocksource to provide
// * finer then tick granular time.
// */
//#ifdef CONFIG_ARCH_USES_GETTIMEOFFSET
//extern u32 arch_gettimeoffset(void);
//#else
//static inline u32 arch_gettimeoffset(void) { return 0; }
//#endif
//
//extern void do_gettimeofday(struct timeval *tv);
//extern int do_settimeofday(struct timespec *tv);
//extern int do_sys_settimeofday(struct timespec *tv, struct timezone *tz);
//#define do_posix_clock_monotonic_gettime(ts) ktime_get_ts(ts)
//extern long do_utimes(int dfd, const char __user *filename, struct timespec *times, int flags);
//struct itimerval;
//extern int do_setitimer(int which, struct itimerval *value,
//			struct itimerval *ovalue);
//extern unsigned int alarm_setitimer(unsigned int seconds);
//extern int do_getitimer(int which, struct itimerval *value);
//extern void getnstimeofday(struct timespec *tv);
//extern void getrawmonotonic(struct timespec *ts);
//extern void getboottime(struct timespec *ts);
//extern void monotonic_to_bootbased(struct timespec *ts);
//
//extern struct timespec timespec_trunc(struct timespec t, unsigned gran);
//extern int timekeeping_valid_for_hres(void);
//extern u64 timekeeping_max_deferment(void);
//extern void update_wall_time(void);
//extern void timekeeping_leap_insert(int leapsecond);
//
//struct tms;
//extern void do_sys_times(struct tms *);
//
///*
// * Similar to the struct tm in userspace <time.h>, but it needs to be here so
// * that the kernel source is self contained.
// */
//struct tm {
//	/*
//	 * the number of seconds after the minute, normally in the range
//	 * 0 to 59, but can be up to 60 to allow for leap seconds
//	 */
//	int tm_sec;
//	/* the number of minutes after the hour, in the range 0 to 59*/
//	int tm_min;
//	/* the number of hours past midnight, in the range 0 to 23 */
//	int tm_hour;
//	/* the day of the month, in the range 1 to 31 */
//	int tm_mday;
//	/* the number of months since January, in the range 0 to 11 */
//	int tm_mon;
//	/* the number of years since 1900 */
//	long tm_year;
//	/* the number of days since Sunday, in the range 0 to 6 */
//	int tm_wday;
//	/* the number of days since January 1, in the range 0 to 365 */
//	int tm_yday;
//};
//
//void time_to_tm(time_t totalsecs, int offset, struct tm *result);
//
///**
// * timespec_to_ns - Convert timespec to nanoseconds
// * @ts:		pointer to the timespec variable to be converted
// *
// * Returns the scalar nanosecond representation of the timespec
// * parameter.
// */
//static inline s64 timespec_to_ns(const struct timespec *ts)
//{
//	return ((s64) ts->tv_sec * NSEC_PER_SEC) + ts->tv_nsec;
//}
//
///**
// * timeval_to_ns - Convert timeval to nanoseconds
// * @ts:		pointer to the timeval variable to be converted
// *
// * Returns the scalar nanosecond representation of the timeval
// * parameter.
// */
//static inline s64 timeval_to_ns(const struct timeval *tv)
//{
//	return ((s64) tv->tv_sec * NSEC_PER_SEC) +
//		tv->tv_usec * NSEC_PER_USEC;
//}
//
///**
// * ns_to_timespec - Convert nanoseconds to timespec
// * @nsec:	the nanoseconds value to be converted
// *
// * Returns the timespec representation of the nsec parameter.
// */
//extern struct timespec ns_to_timespec(const s64 nsec);
//
///**
// * ns_to_timeval - Convert nanoseconds to timeval
// * @nsec:	the nanoseconds value to be converted
// *
// * Returns the timeval representation of the nsec parameter.
// */
//extern struct timeval ns_to_timeval(const s64 nsec);
//
///**
// * timespec_add_ns - Adds nanoseconds to a timespec
// * @a:		pointer to timespec to be incremented
// * @ns:		unsigned nanoseconds value to be added
// *
// * This must always be inlined because its used from the x86-64 vdso,
// * which cannot call other kernel functions.
// */
//static __always_inline void timespec_add_ns(struct timespec *a, u64 ns)
//{
//	a->tv_sec += __iter_div_u64_rem(a->tv_nsec + ns, NSEC_PER_SEC, &ns);
//	a->tv_nsec = ns;
//}
//#endif /* __KERNEL__ */
//
//#define NFDBITS			__NFDBITS
//
//#define FD_SETSIZE		__FD_SETSIZE
//#define FD_SET(fd,fdsetp)	__FD_SET(fd,fdsetp)
//#define FD_CLR(fd,fdsetp)	__FD_CLR(fd,fdsetp)
//#define FD_ISSET(fd,fdsetp)	__FD_ISSET(fd,fdsetp)
//#define FD_ZERO(fdsetp)		__FD_ZERO(fdsetp)
//
///*
// * Names of the interval timers, and structure
// * defining a timer setting:
// */
//#define	ITIMER_REAL		0
//#define	ITIMER_VIRTUAL		1
//#define	ITIMER_PROF		2
//
//struct itimerspec {
//	struct timespec it_interval;	/* timer period */
//	struct timespec it_value;	/* timer expiration */
//};
//
//struct itimerval {
//	struct timeval it_interval;	/* timer interval */
//	struct timeval it_value;	/* current value */
//};
//
///*
// * The IDs of the various system clocks (for POSIX.1b interval timers):
// */
//#define CLOCK_REALTIME			0
//#define CLOCK_MONOTONIC			1
//#define CLOCK_PROCESS_CPUTIME_ID	2
//#define CLOCK_THREAD_CPUTIME_ID		3
//#define CLOCK_MONOTONIC_RAW		4
//#define CLOCK_REALTIME_COARSE		5
//#define CLOCK_MONOTONIC_COARSE		6
//
///*
// * The IDs of various hardware clocks:
// */
//#define CLOCK_SGI_CYCLE			10
//#define MAX_CLOCKS			16
//#define CLOCKS_MASK			(CLOCK_REALTIME | CLOCK_MONOTONIC)
//#define CLOCKS_MONO			CLOCK_MONOTONIC
//
///*
// * The various flags for setting POSIX.1b interval timers:
// */
//#define TIMER_ABSTIME			0x01
//
#endif
